Maybe the lonely, isolated, eccentric couple in Matt Cameron's play about an abducted child are desperate with grief. Or maybe they're crazy. At any rate, Cameron is so obsessed with gimmicks that neither his characters nor the audience can truly enter the dark heart of despair. David Almaral and Nancy Friedrich play all the characters, who may or may not know what happened to six-year-old Ruby Moon--and who may or may not be real people. The pair can be funny at times, but as directed by James E. Whittington for S&V Theatre Company, they too rely on gimmicks and broad acting instead of letting their characters speak for themselves. Through 10/19: Wed 10:30 PM. Playground Theater, 3209 N. Halsted, 773-871-3793. $10.